<template>
  <div class="player" v-show="playList.length>0">
    <transition name="normal" @enter="enter" @after-enter="afterEnter" @leave="leave" @after-leave="afterLeave">
      <div class="normal-player" v-show="fullScreen">
      <div class="background">
        <img :src="currentSong.image" width="100%" height="100%" alt="">
      </div>
      <div class="top">
        <div class="back" @click="back">
          <i class="icon-back"></i>
        </div>
        <h1 class="title" v-html="currentSong.name"></h1>
        <h2 class="subtitle" v-html="currentSong.singer"></h2>
      </div>
      <div class="middle">
        <div class="middle-l">
          <div class="cd-wrapper" ref="cdWrapper">
            <div class="cd" :class="playing ? 'play' : 'play pause'">
               <img :src="currentSong.image" class="image" alt="">
            </div>
          </div>
        </div>
      </div>
      <div class="bottom">
        <div class="progress-wrapper">
          <div class="time time-l">{{formateTime(curTime)}}</div>
          <div class="progress-bar-wrapper">
            <progress-bar :percent = 'percent' @changeCurrent = "changeCurrent"></progress-bar>
          </div>
          <div class="time time-r">{{formateTime(currentSong.duration)}}</div>
        </div>
        <div class="operators">
          <div class="icon i-left">
            <i :class="iconMode" @click="setMusicMode"></i>
          </div>
          <div class="icon i-left">
            <i @click="prev" class="icon-prev"></i>
          </div>
          <div class="icon i-center">
            <i @click="controlPlaying" :class="playIcon"></i>
          </div>
          <div class="icon i-right">
            <i @click="next" class="icon-next"></i>
          </div>
          <div class="icon i-right">
            <i class="icon icon-not-favorite"></i>
          </div>
        </div>
      </div>
    </div>
    </transition>
    <transition name="mini">
      <div class="mini-player" v-show="!fullScreen" @click="open">
      <div class="icon">
        <div class="imgWrapper">
          <img :class="playing ? 'play' : 'play pause'" :src="currentSong.image" height="40" width="40" alt="">
        </div>
      </div>
      <div class="text">
        <h2 class="name" v-html="currentSong.name"></h2>
        <p class="desc" v-html="currentSong.singer"></p>
      </div>
      <div class="control">
        <progress-circle :radius="radius" :percent="percent">
          <i @click.stop="controlPlaying" class="icon-mini" :class="miniIcon"></i>
        </progress-circle>
      </div>
      <div class="control">
        <i class="icon-playlist"></i>
      </div>
    </div>
    </transition>
    <audio ref="audio"
    :src="currentSong.url"
     @canplay="ready"
     @error="error"
     @timeupdate="upDateTime"
     @ended="end"
     >
     </audio>
  </div>
</template>

<script>
import {mapGetters, mapMutations} from 'vuex'
import animations from 'create-keyframe-animation'
import { prefixStyle } from '@/common/js/dom'
import ProgressBar from '@/base/progress-bar/progress-bar'
import ProgressCircle from '@/base/progress-circle/progress-circle'
import {playMode} from '@/common/js/config'
import {shuffle} from '@/common/js/util'
const transform = prefixStyle('transform')
export default {
  components: {
    ProgressBar,
    ProgressCircle
  },
  props: {},
  data() {
    return {
      songReady: false,
      curTime: 0,
      radius: 32
    }
  },
  watch: {
    currentSong(newSong, oldSong) {
      if (newSong.id === oldSong.id) {
        return
      }
      this.$nextTick(() => {
        this.$refs.audio.play()
      })
    },
    playing(newPlaying, oldPlaying) {
      let audio = this.$refs.audio
      this.$nextTick(() => {
        newPlaying ? audio.play() : audio.pause()
      })
    }
  },
  computed: {
    ...mapGetters([
      'fullScreen',
      'playing',
      'playList',
      'currentSong',
      'currentIndex',
      'mode',
      'sequenceList'
    ]),
    percent() {
      return this.curTime / this.currentSong.duration
    },
    playIcon() {
      return this.playing ? 'icon-pause' : 'icon-play'
    },
    miniIcon() {
      return this.playing ? 'icon-pause-mini' : 'icon-play-mini'
    },
    iconMode() {
      return this.mode === playMode.sequence ? 'icon-sequence' : this.mode === playMode.loop ? 'icon-loop' : 'icon-random'
    }
  },
  created() {
    console.log(this.playList)
  },
  mounted() {},
  methods: {
    ...mapMutations({
      setFullScreen: 'SET_FULL_SCREEN',
      setPlaying: 'SET_PLAYING_STATE',
      setCurrentIndex: 'SET_CURRENT_INDEX',
      setPlayMode: 'SET_PLAY_MODE',
      setPlayList: 'SET_PLAYLSIT'
    }),
    changeCurrent(procent) {
      this.$refs.audio.currentTime = this.currentSong.duration * procent
      if (!this.playing) {
        this.controlPlaying()
      }
    },
    upDateTime(e) {
      // 获取歌曲播放时间
      this.curTime = e.target.currentTime | 0
    },
    formateTime(curTime) {
      // 将时间转化成分秒
      let minute = curTime / 60 | 0
      let second = this._padTime(curTime % 60)
      return `${minute}:${second}`
    },
    _padTime(num, n = 2) {
      let len = num.toString().length
      while (len < n) {
        num = '0' + num
        len++
      }
      return num
    },
    error() {
      this.songReady = true
    },
    ready() {
      // 歌曲准备好设置成true
      this.songReady = true
    },
    prev() {
      if (!this.songReady) {
        return
      }
      let index = this.currentIndex - 1
      if (index === -1) {
        index = this.playList.length - 1
      }
      this.setCurrentIndex(index)
      if (!this.playing) {
        this.controlPlaying()
      }
      this.songReady = false
    },
    end() {
      if (this.mode === playMode.loop) {
        this.loop()
      } else {
        this.next()
      }
    },
    loop() {
      this.$refs.audio.currentTime = 0
      this.$refs.audio.play()
    },
    next() {
      if (!this.songReady) {
        return
      }
      let index = this.currentIndex + 1
      if (index === this.playList.length) {
        index = 0
      }
      this.setCurrentIndex(index)
      if (!this.playing) {
        this.controlPlaying()
      }
      this.songReady = false
    },
    controlPlaying() {
      if (!this.songReady) {
        return
      }
      this.setPlaying(!this.playing)
    },
    open() {
      this.setFullScreen(true)
    },
    back() {
      this.setFullScreen(false)
      console.log(this.fullScreen)
    },
    enter(el, done) {
      const {x, y, scale} = this._getPosAndScal()
      let animation = {
        0: {
          transform: `translate3d(${x}px, ${y}px, 0) scale(${scale})`
        },
        60: {
          transform: `translate3d(0, 0, 0) scale(1.1)`
        },
        100: {
          transform: `translate3d(0, 0, 0) scale(1)`
        }
      }

      animations.registerAnimation({
        name: 'move',
        animation,
        presets: {
          duration: 400,
          easing: 'linear'
        }
      })

      animations.runAnimation(this.$refs.cdWrapper, 'move', done)
    },
    afterEnter() {
      animations.unregisterAnimation('move')
      this.$refs.cdWrapper.style.animation = ''
    },
    leave(el, done) {
      const {x, y, scale} = this._getPosAndScal()
      this.$refs.cdWrapper.style.transition = `all 0.4s`
      this.$refs.cdWrapper.style[transform] = `translate3d(${x}px, ${y}px, 0) scale(${scale})`
      this.$refs.cdWrapper.addEventListener('transitionend', done)
    },
    setMusicMode() {
      const _mode = (this.mode + 1) % 3
      this.setPlayMode(_mode)
      let list = null
      if (_mode === playMode.random) {
        list = shuffle(this.sequenceList)
      } else {
        list = this.sequenceList
      }
      this.resetCurrentIndex(list)
      this.setPlayList(list)
    },
    resetCurrentIndex(list) {
      let index = list.findIndex((item) => {
        return item.id === this.currentSong.id
      })
      this.setCurrentIndex(index)
    },
    afterLeave() {
      this.$refs.cdWrapper.style.transition = ''
      this.$refs.cdWrapper.style[transform] = ''
    },
    _getPosAndScal() {
      const targetWidth = 40
      const paddingBottom = 30
      const paddingTop = 80
      const paddingLeft = 40
      const width = window.innerWidth * 0.8
      const scale = targetWidth / width
      const x = -(window.innerWidth / 2 - paddingLeft)
      const y = window.innerHeight - paddingBottom - paddingTop - width / 2
      return {
        x, y, scale
      }
    }
  }
}
</script>
<style lang="stylus" scoped>
@import '~@/common/stylus/variable'
@import '~@/common/stylus/mixin'

  .player
    .normal-player
      position: fixed
      left: 0
      right: 0
      top: 0
      bottom: 0
      z-index: 150
      background: $color-background
      .background
        position: absolute
        left: 0
        top: 0
        width: 100%
        height: 100%
        z-index: -1
        opacity: 0.6
        filter: blur(20px)
      .top
        position: relative
        margin-bottom: 25px
        .back
          position absolute
          top: 0
          left: 6px
          z-index: 50
          .icon-back
            display: block
            padding: 9px
            font-size: $font-size-large-x
            color: $color-theme
            transform: rotate(-90deg)
        .title
          width: 70%
          margin: 0 auto
          line-height: 40px
          text-align: center
          no-wrap()
          font-size: $font-size-large
          color: $color-text
        .subtitle
          line-height: 20px
          text-align: center
          font-size: $font-size-medium
          color: $color-text
      .middle
        position: fixed
        width: 100%
        top: 80px
        bottom: 170px
        white-space: nowrap
        font-size: 0
        .middle-l
          display: inline-block
          vertical-align: top
          position: relative
          width: 100%
          height: 0
          padding-top: 80%
          .cd-wrapper
            position: absolute
            left: 10%
            top: 0
            width: 80%
            box-sizing: border-box
            height: 100%
            .cd
              width: 100%
              height: 100%
              border-radius: 50%
              &.play
                animation: rotate 20s linear infinite
                animation-fill-mode: forwards
              &.pause
                animation-play-state: paused
              .image
                position: absolute
                left: 0
                top: 0
                width: 100%
                height: 100%
                box-sizing: border-box
                border-radius: 50%
                border: 10px solid rgba(255, 255, 255, 0.1)
          .playing-lyric-wrapper
            width: 80%
            margin: 30px auto 0 auto
            overflow: hidden
            text-align: center
            .playing-lyric
              height: 20px
              line-height: 20px
              font-size: $font-size-medium
              color: $color-text-l
        .middle-r
          display: inline-block
          vertical-align: top
          width: 100%
          height: 100%
          overflow: hidden
          .lyric-wrapper
            width: 80%
            margin: 0 auto
            overflow: hidden
            text-align: center
            .text
              line-height: 32px
              color: $color-text-l
              font-size: $font-size-medium
              &.current
                color: $color-text
            .pure-music
              padding-top: 50%
              line-height: 32px
              color: $color-text-l
              font-size: $font-size-medium
      .bottom
        position: absolute
        bottom: 50px
        width: 100%
        .dot-wrapper
          text-align: center
          font-size: 0
          .dot
            display: inline-block
            vertical-align: middle
            margin: 0 4px
            width: 8px
            height: 8px
            border-radius: 50%
            background: $color-text-l
            &.active
              width: 20px
              border-radius: 5px
              background: $color-text-ll
        .progress-wrapper
          display: flex
          align-items: center
          width: 80%
          margin: 0px auto
          padding: 10px 0
          .time
            color: $color-text
            font-size: $font-size-small
            flex: 0 0 30px
            line-height: 30px
            width: 30px
            &.time-l
              text-align: left
            &.time-r
              text-align: right
          .progress-bar-wrapper
            flex: 1
        .operators
          display: flex
          align-items: center
          .icon
            flex: 1
            color: $color-theme
            &.disable
              color: $color-theme-d
            i
              font-size: 30px
          .i-left
            text-align: right
          .i-center
            padding: 0 20px
            text-align: center
            i
              font-size: 40px
          .i-right
            text-align: left
          .icon-favorite
            color: $color-sub-theme
      &.normal-enter-active, &.normal-leave-active
        transition: all 0.4s
        .top, .bottom
          transition: all 0.4s cubic-bezier(0.86, 0.18, 0.82, 1.32)
      &.normal-enter, &.normal-leave-to
        opacity: 0
        .top
          transform: translate3d(0, -100px, 0)
        .bottom
          transform: translate3d(0, 100px, 0)
    .mini-player
      display: flex
      align-items: center
      position: fixed
      left: 0
      bottom: 0
      z-index: 180
      width: 100%
      height: 60px
      background: $color-highlight-background
      &.mini-enter-active, &.mini-leave-active
        transition: all 0.4s
      &.mini-enter, &.mini-leave-to
        opacity: 0
      .icon
        flex: 0 0 40px
        width: 40px
        height: 40px
        padding: 0 10px 0 20px
        .imgWrapper
          height: 100%
          width: 100%
          img
            border-radius: 50%
            &.play
              animation: rotate 10s linear infinite
            &.pause
              animation-play-state: paused
      .text
        display: flex
        flex-direction: column
        justify-content: center
        flex: 1
        line-height: 20px
        overflow: hidden
        .name
          margin-bottom: 2px
          no-wrap()
          font-size: $font-size-medium
          color: $color-text
        .desc
          no-wrap()
          font-size: $font-size-small
          color: $color-text-d
      .control
        flex: 0 0 30px
        width: 30px
        padding: 0 10px
        .icon-play-mini, .icon-pause-mini, .icon-playlist
          font-size: 30px
          color: $color-theme-d
        .icon-mini
          font-size: 32px
          position: absolute
          left: 0
          top: 0

  @keyframes rotate
    0%
      transform: rotate(0)
    100%
      transform: rotate(360deg)
</style>